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Genome sequencing reveals the genetic architecture of heterostyly and domestication history of common buckwheat
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Genome sequencing reveals the genetic architecture of heterostyly and domestication history of common buckwheat
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Journal Article
Genome sequencing reveals the genetic architecture of heterostyly and domestication history of common buckwheat
2023
Overview
Common buckwheat, Fagopyrum esculentum, is an orphan crop domesticated in southwest China that exhibits heterostylous self-incompatibility. Here we present chromosome-scale assemblies of a self-compatible F. esculentum accession and a self-compatible wild relative, Fagopyrum homotropicum, together with the resequencing of 104 wild and cultivated F. esculentum accessions. Using these genomic data, we report the roles of transposable elements and whole-genome duplications in the evolution of Fagopyrum. In addition, we show that (1) the breakdown of heterostyly occurs through the disruption of a hemizygous gene jointly regulating the style length and female compatibility and (2) southeast Tibet was involved in common buckwheat domestication. Moreover, we obtained mutants conferring the waxy phenotype for the first time in buckwheat. These findings demonstrate the utility of our F. esculentum assembly as a reference genome and promise to accelerate buckwheat research and breeding.Genome sequencing and analyses of common buckwheat, Fagopyrum esculentum, reveal the genetic architecture of heterostyly, show that southeast Tibet played a key role in the domestication and provide new genetic materials for buckwheat breeding.
Publisher
Nature Publishing Group
Subject
